异步输出到asp.net中的文本框

本文关键字:文本 net 输出 asp 异步 | 更新日期: 2023-09-27 18:00:51

我在服务器端运行的C#asp.net项目中运行了一个foreach循环。

循环的每次迭代完成后,我想更新客户端web浏览器上的文本框(consolebox.text(,这样用户就可以看到循环已经完成。

它只在功能完成后更新文本框,因此用户在整个foreach完成之前不会看到进度输出。下面是我的代码,我已经尝试了ajax更新面板,但无效

 protected void Button1_Click(object sender, EventArgs e)
    {
        consolebox.Text = "Please Wait........"+ Environment.NewLine;

            foreach (var listBoxItem in serverlist.Items)
                {
                    string send = listBoxItem.ToString();
                    DELETEPROFILE(send);
                    consolebox.Text += ("" + send + "........Complete" + Environment.NewLine);
                }

    }

异步输出到asp.net中的文本框

您可以通过web服务来实现。使用ajax启动功能,使用其他服务读取功能。

样品:

Aspx

<script type = "text/javascript">
        function ajaxCall(fsMathod) {
            $.ajax({
                type: "POST",
                url: "Test.aspx/" + fsMathod,
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: OnSuccess,
                failure: function (response) {
                    alert(response.d);
                }
            });
        }
        function OnSuccess(response) {
            alert(response.d);
            var TheTextBox = document.getElementById("<%=consolebox.ClientID%>");
            TheTextBox.value = TheTextBox.value + response.d;
        }
    </script>
    <body>
    <form id="form1" runat="server">
    <div style="margin:0 auto; width:20%">
        Textbox: <asp:TextBox ID="consolebox" TextMode="MultiLine" runat="server"></asp:TextBox>
        <br />
        <input id="btnStartAsync" type="button" value="Start Async" onclick = "ajaxCall('startAsync');" />
        <input id="btnReadAsync" type="button" value="Read Async" onclick = "ajaxCall('readAsync')" />
    </div>
    </form>
</body>

c#

static string CompletedItems = "";
[System.Web.Services.WebMethod]
        public static string readAsync()
        {
            return "" + CompletedItems + "........Complete'n";
        }
        [System.Web.Services.WebMethod]
        public static void startAsync()
        {
            asyncTask();
        }
        private static void asyncTask()
        {
            foreach (var listBoxItem in serverlist.Items)
            {
                string send = listBoxItem.ToString();
                DELETEPROFILE(send);
                //consolebox.Text += ("" + send + "........Complete" + Environment.NewLine);
                CompletedItems += send + ",";
            }
        }